A world-first, real-life trial of electric vehicles, involving leading battery analytics specialist Silver Power Systems (SPS), EV manufacturers and academics, has brought closer the holy grail of battery modelling: accurately predicting EV battery lifespan.
With the rapid growth in electrification driven by the 2030 ban on new ICE sales combined with the battery being by far the most expensive component of an EV, it is critical for all sectors – from OEMs and battery manufacturers to fleet owners and operators – to understand how the battery is performing and predict how much it is likely to degrade over the vehicle’s lifetime.
Until now, predicting lifespan has been difficult. While digital models of EV batteries have been created, they have lacked accurate real-world data to back them up. What’s more, not all batteries are born equal, and not all batteries are treated equally throughout their life, degrading at different rates, subject to different drivers and charging routines, further underlining the need for real-world data to be combined with machine-learning based predictive technology.
Battery analytics specialist Silver Power System (SPS) has partnered with Imperial College, London EV Company and JSCA, the research and development division of Watt Electric Vehicle Company, on a revolutionary electric vehicle battery research programme designed to predict battery lifespan.
Part-funded by the Advanced Propulsion Centre, the Real-Time Electrical Digital Twin Operating Platform (REDTOP) project has created and trialed the world’s most advanced ‘digital twins’ of real EV batteries.
Built using data from a 500,000-km/nine month on-road trial of 50 LEVC TX taxis and an all-new EV sports car from the Watt EV Company, the highly sophisticated algorithms unlock an unprecedented view of battery performance and state-of-health.
Combined with SPS’s analytics capabilities, this new ‘digital twin’ development concept can be applied to any EV battery to predict battery lifespan.
Bringing a step change in battery understanding and performance visualisation, the technology can accelerate EV development for manufacturers, enable fleet owners to predict future EV residual values and OEMs to better underwrite battery warranties.
Using cloud-based connectivity combined with its own software, SPS’s future vision is to offer through-life smart EV battery monitoring with the objective of improving battery performance while the vehicle is being used, further extending lifespan.
Run over the last nine months, the pioneering REDTOP (Real-time Electrical Digital Twin Operating Platform) automotive research programme has sought to bring about a step change in battery understanding, with the objective of creating the world’s most advanced battery ‘digital twin’ – a highly-sophisticated virtual model, linked to a real battery.
Part-funded by The Advanced Propulsion Centre UK(APC), the revolutionary project, led by Silver Power Systems, has seen partners Imperial College, London Electric Vehicle Company (LEVC) and JSCA, the research and development division of the Watt Electric Vehicle Company, join forces on a real-world EV trial.
Since January, 50 LEVC TX electric taxis and a new EV sports car from the Watt EV Company have collectively travelled over 500,000km as part of the programme. Each vehicle has been fitted with Silver Power Systems’ state-of-the-art data-collecting IoT device, which constantly communicates with the company’s cloud-based software.
This crucial data has been analysed by SPS’s machine learning-powered platform EV-OPS, and together with Imperial College’s battery researchers, the world’s most advanced digital twins of actual EV batteries have been created, giving not just an unprecedented view of real-time battery performance and state-of-health, but also the potential to enable these highly sophisticated battery models to predict battery lifespan.
“This really is the holy grail,” explained Pete Bishop, CTO of Silver Power Systems. “Understanding how an electric vehicle’s battery is performing right now – and predicting how it will perform over the coming years – is absolutely critical for many sectors. But to date there has been a lack of data and predictive modelling has been largely lab-based.
“By combining a robust real-world trial with our EV-OPS machine-learning analytics capability through the REDTOP programme, we have not only been able to unlock an unprecedented view of real-time battery performance and state-of-health but also create the world’s most advanced digital twin enabling prediction of battery future life.”
SPS’s technology has enormous benefits for a wide variety of sectors. Unparalleled monitoring gives a total picture of battery activity, identifying differences between batteries (whether performance or charging capability) and – in the long term – building up a complete picture of battery health over the life of the vehicle: a battery ledger.
For electric vehicle manufacturers this monitoring capability gives insights into battery performance enabling them to accelerate the development of battery-powered vehicles. Fleet operators can gain a complete picture of EV health across their vehicle fleet enabling them to more efficiently run their vehicles (and potentially extend their life), while fleet owners can use SPS’s capabilities to predict the future residual value of vehicles based on future battery health. As the market transitions to EVs, this is set to become of ever-increasing importance.
OEMs and battery manufacturers can use the technology to enable more accurately underwritten battery warranties, setting warranties on a new battery or managing risk on existing battery, while other sectors who can benefit include insurance providers, transport authorities, councils and even private EV owners for whom having access to data on their own vehicle’s battery performance is beneficial.
In the future, SPS’s vision is for its technology to digitally optimise EV batteries during their life.
Liam Mifsud, Program Manager, Silver Power Systems added: “On top of using a combination of real-world data, machine learning and the digital twin to predict future battery degradation, we can use this technology to update an EV’s software via the cloud to change algorithms or parameters to optimise the performance of the battery as the cells age and maximise battery life. For all automotive sectors the potential to improve battery performance and overall useable life is revolutionary.”
About Silver Power Systems
Silver Power Systems is a team of experts leading the way in real time, advanced performance-enhancing battery analytics for all types of electric vehicle, from car to commercial vehicle. The UK based scale-up’s independent battery monitoring and analytics capabilities have one overall goal: to improve the performance of electric vehicles and prolong the life of their batteries for its clients.
SPS works with a range of customers from large vehicle fleets who are increasingly exposed to the asset-related risk of ageing batteries, to OEMs who are exposed to risk around battery warranty and automotive R&D departments who are developing the next-generation of electric vehicles, who need the very latest in analytics expertise.
Its technology and expertise can help accelerate EV development and reduce fleet residual value risk exposure – and by reducing degradation, it can ultimately help make an EV have a longer, more use-able life.